A bi-phase enabled serial acquisition system for remote processing of digitized ECG

Authors:
Rajarshi Gupta;Jitendranath Bera;Madhuchhanda Mitra
Affiliations:
Department of Applied Physics, University of Calcutta, Kolkata 700009, India;Department of Applied Physics, University of Calcutta, Kolkata 700009, India;Department of Applied Physics, University of Calcutta, Kolkata 700009, India
Venue:
Computers and Electrical Engineering
Year:
2012

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Abstract

This paper presents an approach for acquiring digitized ECG samples in a personal computer using an offline communication technique. For this, two standalone embedded modules are placed at the two ends of the communication link. The transmit end module collects ECG samples from the source and stores them in a RAM. Finally it converts each data byte into a bi-phase encoded bit stream for transmission using a standard telephone set through post office telephone line. The receive-end module, coupled with the telephone receiver decodes the ECG data, and then delivers them to a desktop computer through the serial port. An application software in the computer is used to store these samples for visual inspection. The detailed architecture and test results are discussed with synthetic ECG data available from PTB diagnostic ECG database (ptb-db) under Physionet.